Core-making machine.



P. P. BUSCH.

CORE MAKING MACHINE.

APPLICATION FILED DEC. 7. 1914.

1, 1 50,497. Patented Aug. 17, 1915.

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COLUMBIA PLANOORAPH co., WASHINGTON. D, c.

P. P. BUSCH. C ORE MAKING MACHINE.

APPLICATION FILED DEC- 7. I914.

Patented Aug. 17, I915.

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3mm 72am 7? M COLUMBIA PLANOGRAPH CO.,WASHINGTON. D. c.

APPLICATION FILED DEC. 7. 1914.

P. P. BUSCH.

CORE MAKING MACHINE.

Patented Aug. 17, 1915.

3 SHEETS-SHEET 3.

UNT

PETER IE. Boson, or :ennnonn, OHIO.

' Conn-Maxine MACHINE.

. Specification of Letters Patent.

Patented Aug. 17, 1915.

Application filed December 7, 1914. Serial No. 875,965.

To all whom it may concern ,Be it known that 1, PETER: 1 Boson, c1t1- zen of the UnitedStates, residing at ,Bed-

output will be materially increased, and per-.

fect cores may be rapidly formed; and the machine is characterized by the fact that it employs a hingedcopeplate at one side of the drag, draw plate at another side, a vent plate holder at another side, and a drier plate rack at the corner, thef 'pa rts being adjustable so that the machine c'anbe used with any size of corebox. j

In th'e'accompanying drawings: Figure 1 is a plan view of the machine in open posi tion. Fig. 2 is a front elevation. Fig. 3 is a detail in perspective of the device for adjusting the vent plate holder. Fig. a is a detail of the latch for the draw plate. Fig. 5 is an end elevation of the machine. Figs. 6, 7 and 8 are perspectiveview's of the machine in diflerent positions. Fig. 9 is a partial vertical section.

Referring specifically to the drawings, 8 indicates a bench top supported by legs 9,

the left front leg having lugs 9 and the legs being connected by brace rods 10. On the bench is a box 11 to hold the sand 11*.

At the front edge of the bench, near the left end thereof, are upright lugs 12 to which are hinged, by a rod 18, the arms 1 1 of the drag plate 14 which receives the drag portion 14 of the core box. A handle 14 is provided on the drag plate to swing the same.

The draw plate 16 is hin ed to the rod 13 by bent arms 15, and this p ate has rest bars 16 for the core driers, these bars being adjustable by screws 16.

16 is a bar secured to the draw plate and provided at one end with a catch portion or projection 16 16 is a handle to swing the draw plate.

17 indicates a latch pin which is arranged to engage the projection 16 and this latch works in a cylinder 18 attached to the bench, with a spring 18 coiled around the stem 17 of the latch between the head thereof and the end 19 of the cylinder. The latch stem has a forked connection 20 to a lever 21 by means of a pivot 22, the lever being pivoted at 21*, so that the latch may be operated by the lever.

23 indicates vertical brackets on the plate or bed 8, and these brackets are slotted as at 23 to receive an adjustable pivot rod 2a to which the cope plate 25 is hinged by arms 25,'and this cope plate has a handle 25 at its free end.

25is a vertically adjustable stop screw for the cope plate, and in Figs. 6, 7 and 8 the cope'portion 25 of the core box is indicated in position on the cope plate.

The vent plate holder 28, for the vent plate 28 having vent bars 28 is hinged at the left end of the bench by means of a vertically adjustable plate 27, and hinge rod 27 The plate 27 slides in a dove-tail slot in a plate 26 fixed to the end of the bench, and the sliding plate has a slot 27 b which receives a screw stud 27 with a hand nut 27 to fasten the plate at adjustment, whereby the vertical position of the vent plate holder 28 may be varied. This holder is counterbalanced by a weight 30 fastened by a screw 31 to a rod 29 depending from the holder. The rack 32,'for holding the drier plates, is hinged to swing vertically onthe lugs 9 at the left front corner of the'bench.

The operation of the machine in the process of making cores is as follows: First the drag half 14; of core box is packed after which the vent plate 28 is swung down upon the drag to vent the core, see Fig. 7; then the vent plate is swung back; next the cope plate half 25 of core box is packed, and the cope is swung over upon the drag, the next step is to tap the cope plate for the purpose of releasing the core, then the cope is swung back and off the drag, after which the drier 33 (Fig. 6) is placed on the cores, then the draw plate 16 is swung over on the drier and the drag, following which the draw plate and drag plate are swung together by means of the handles 14" and 16 and the two with the complete core rocked over to horizontal position, where the draw plate is held by the latch 17 engaging the projection 16 to hold said plate in such position while the drag is swung back as over type, the combination of a hinged drag shown in Fig. 6. The next step is to remove the cores, after which the latch is released by the lever 21 permitting the draw plate to drop as shown in Fig. 7so as toenable the workman to have free access to the bench for the next operation.

The vertical adjustment of the hinge supports for the cope plate and the vent plate and the adjustment of the bars 16 on the drawplate by means of the screws 16, perinits the parts to be adapted for core boxes of various sizes, and the various parts are Conveniently arranged for the successive operations in a rapid and convenient mannor, the grouping being particularly efiective for quick work and in convenient reach of an operator standing in front of the bench.

What I claim as new is:

1. In a core making machine of the rockplate, a hinged cope plate at one side thereof, a hinged draw plate at another side thereof,.and a hinged vent plate holder at a third side thereof, the cope and draw plates and the vent plate holder being adapted to be swung over upon the drag plate, and the drag and draw plates being concentrically hinged to rock over together. I 2. In a core making machine of the rockover type, the combination of a hinged drag plate, a hinged cope plate at one side thereof and arranged to swing over upon the same, a hinged draw plate at another side thereof and arranged to swing over upon the same, a hinged vent plate holder at a third side thereof and arranged to swing over upon the same, the drag plate and the draw plate being concentrically pivoted to rock over together, and aswinging drier rack located adjacent to thedraw plate, substantially as described.

3. In a core making machine of the rockover type, the combination of a hinged drag plate, a draw plate hinged at the same pivotal axis as the drag plate, so that they may rock over together at one side, a hinged cope plate and a hinged vent plate holder pivoted respectively at opposite ends of the drag plate to swing down upon the same, the/hinges of the cope plate and vent plate holder being vertically adjustablefor' the purposes stated, and adjustable rest bars mounted on theidraw plate 4. Ina core makingmachin'e of the rockover type, the combination of a hinged drag plate, a coaxially hinged draw plate, and rest bars carried by the draw plate" and adjustable toward and from the same, for the purpose stated. V I 5. In abore making machine of the rockover type, the combination of a hinged drag plate, a coaxially hinged draw plate, and ,a

latch engageable with the draw plate tohold the same in desired position when the plates are rocked over, the latch being releasable to permit the draw'plate to drop.

6. In a core makingmachine of the rockover type, the combination of a bench, a drag plate hinged thereto, a cope plate and a vent plate holder hinged respectively to the bench at opposite ends of the drag plate, in position to be swung down upon the same, and a draw plate hinged to the front edge of the bench coaxial with the drag plate,.

whereby the drag plate and the draw plate may be rockedv over together at the front edge ofthe bench, and releasable means to support the draw plate when it is so rocked over.

In testimony whereof, I affix my signature in presence of two witnesses. PETER P. BUSCH.

Witnesses:

JOHN A. BOMMHARDT, I

J B. DAVIS.

Copies of this patent maybe obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. O, 

